Crossfire possibility r9 290

[legendareN]

Hey guys

 

Been following the youtube channel for a few years now and decided to make an account finaly! I have a question

 

My current system

 

intel 2500k

P8 Z68-V LX Motherboard

8Gigs of corsair dominator RAM

120gig intel 840 SSD

750gig 7200rpm
850 Corsair power supply

 

and a refference r9 290 4gb from ASUS.

 

So I was wondering if I could crossfire with with another r9 290 (any brand?) with my current motherboard

 

http://www.asus.com/nl/Motherboards/P8Z68V_LX/specifications/

 

It says x4 speeds on the second lane.

 

Would that be sufficient? In the Netherlands I can get r9 290 second hand for just over 200 dollars.

 

 

 

Thanks for reading,

 

Mitch

[Totally-A-Hero]

Does it have a PCI-e 16x x2 ? It needs two. If not your not gonna get a large performance boost.

[legendareN]

the specifications are in the link

 

http://www.asus.com/nl/Motherboards/P8Z68V_LX/specifications/

 

Some answers I get from google is you will lose a tiny bit of performance, between 3 to 10% and others say you can't run it. I can't figure it out.

[PathfinderNC]

I would do it only if you can upgrade the board to one with 2 full x16 pcie slots, otherwise the performance gain likely won't justify the 200 dollars.

[legendareN]

Hmm, hard to make that call, since I wont be upgrading my 2500k (liquid cooler btw and at 4.3ghz) any time soon. So upgrading the motherboard isn't really an option.

 

I'm curious to know if anyone knows how much less it would perform versus a 16x lane. Because the graphics card I ofcourse tend to use for the 2 years to come. 

 

If the performance difference is really too big you might be right. 

 

Thanks for the comments so far guys  B)

[VintageCake]

motherboard does not support sli or crossfire.

 

you're outta luck, sorry.

[legendareN]

Alright thanks. Because of the lane speeds or? Supports AMD Quad-GPU CrossFireX™ Technology  

 

Is what it says. but ohwell thanks for the help. Will look into maybe upgrading my motherboard!

[winningsince1337]

Hey guys

 

Been following the youtube channel for a few years now and decided to make an account finaly! I have a question

 

My current system

 

intel 2500k

P8 Z68-V LX Motherboard

8Gigs of corsair dominator RAM

120gig intel 840 SSD

750gig 7200rpm

850 Corsair power supply

 

and a refference r9 290 4gb from ASUS.

 

So I was wondering if I could crossfire with with another r9 290 (any brand?) with my current motherboard

 

http://www.asus.com/nl/Motherboards/P8Z68V_LX/specifications/

 

It says x4 speeds on the second lane.

 

Would that be sufficient? In the Netherlands I can get r9 290 second hand for just over 200 dollars.

 

 

 

Thanks for reading,

 

Mitch

 

Titan blacks in 4 way SLI at PCIe 3.0 x4 aren't bottlenecked by the PCIe bus. You're fine have fun with another card! Don't bother with a new CPU and mobo. It's not gonna be worth it till we see 14nm in a year or so.

 

EDIT: after reading more on your mobo, you have 2 PCIe 2.0 x16 and the second one runs at x4 electrical (ie less power to the card from the board). However, it should be fine because the 290 has auxiliary power inputs that are capable of feeding it without a ton of power from the Mobo it's self.

[Jumper118]

Hey guys

 

Been following the youtube channel for a few years now and decided to make an account finaly! I have a question

 

My current system

 

intel 2500k

P8 Z68-V LX Motherboard

8Gigs of corsair dominator RAM

120gig intel 840 SSD

750gig 7200rpm

850 Corsair power supply

 

and a refference r9 290 4gb from ASUS.

 

So I was wondering if I could crossfire with with another r9 290 (any brand?) with my current motherboard

 

http://www.asus.com/nl/Motherboards/P8Z68V_LX/specifications/

 

It says x4 speeds on the second lane.

 

Would that be sufficient? In the Netherlands I can get r9 290 second hand for just over 200 dollars.

 

 

 

Thanks for reading,

 

Mitch

that is fine. its only sli that needs x8 to run

[PathfinderNC]

Titan blacks in 4 way SLI at PCIe 3.0 x4 aren't bottlenecked by the PCIe bus. You're fine have fun with another card! Don't bother with a new CPU and mobo. It's not gonna be worth it till we see 14nm in a year or so.

 

EDIT: after reading more on your mobo, you have 2 PCIe 2.0 x16 and the second one runs at x4 electrical (ie less power to the card from the board). However, it should be fine because the 290 has auxiliary power inputs that are capable of feeding it without a ton of power from the Mobo it's self.

 

Pretty sure it's 4 lanes of communication to the cpu not power delivery.

[legendareN]

Thanks a lot for the input so far ! really appreciated

[winningsince1337]

Pretty sure it's 4 lanes of communication to the cpu not power delivery.

I don't think so because is says PCIe 2.0 x16 (x4) the extra (x4) typically means x4 electrical. Even if it is x4 instead of x16 it's still enough to make the card have full utilization.

[legendareN]

Thanks for the replies, I think I'll get just get another. Brands do not matter right? even a non reference would work with my reference ?

 

If it won't run well in the end I'll just resell it!

[-rascal-]

I don't think so because is says PCIe 2.0 x16 (x4) the extra (x4) typically means x4 electrical. Even if it is x4 instead of x16 it's still enough to make the card have full utilization.

 

1x PCIe 2.0 x16 (x4 mode, black) *1

 

The "X4 Electrically" means it functions as a regular X16 slot, but only have 1/4 of the amount of data pins.

There are 82 pins that make up the full PCI-E X16 slot. Pins 1-3 are the +12v power pins that provide the power to whatever is in the expansion slot.

 

PCI-E X1 -- pins 1 - 18 are present

PCI-E X4 -- pins 1 - 32 are present

PCI-E X8 -- pins 1 - 49 are present

PCI-E X16 -- pins 1 - 82 (all) are present

 

 

@legendareN

Your motherboard support AMD Crossfire. The minor issue of running a Card in a PCI-E X4 slot, is that it may not perform at 100% as it is limited by the slot itself. Depending on the card, the performance hit may be only a few percent.

I'm not 110% certain how much of an impact a X4 slot will have on a R9-290, but you should be okay regardless.

[legendareN]

Alright thanks once again! You guys been a great help

[winningsince1337]

Thanks for the replies, I think I'll get just get another. Brands do not matter right? even a non reference would work with my reference ?

 

If it won't run well in the end I'll just resell it!

 

Yes, any 290 or 290x will crossfire with it. Just don't get Asus DCU2 card. Asus took the 780 cooler and slapped it on the 290. As a result, only ~1.5 of the heat pipes touch the GPU so it runs excessively hot.

[PathfinderNC]

Yes, any 290 or 290x will crossfire with it. Just don't get Asus DCU2 card. Asus took the 780 cooler and slapped it on the 290. As a result, only ~1.5 of the heat pipes touch the GPU so it runs excessively hot.

 

I find the DCU2 to be an excellent cooler. I've only topped 80c once at full load in a hot room. Normally it runs at or below 75c. The usual reason not to get an ASUS is because of the poorly overclocking elpida vram. Other than that, they are excellent cards.

[winningsince1337]

I find the DCU2 to be an excellent cooler. I've only topped 80c once at full load in a hot room. Normally it runs at or below 75c. The usual reason not to get an ASUS is because of the poorly overclocking elpida vram. Other than that, they are excellent cards.

 

This is why people typically don't recommend the DCU2 from Asus for the 290(x) as you can see in the picture below, 2 of the heat pipes make 0 contact with the GPU. This is really disappointing from Asus. This causes it to run hotter than other cards such as the Vapor X or Tri-X from Sapphire.

[SkilledRebuilds]

Look up 7970 + 7950 crossfire. On YT.

Note the gpu usage.

Your 16x card may run at 90-95% to match the 100% the lower card Is pumping out.